Tectonostratigraphic history of the Neogene Maimará basin, Northwest Argentina

Autores
Galli, Claudia Inés; Coira, Beatriz Lidia Luisa; Alonso, Ricardo Narciso; Iglesia Llanos, Maria Paula; Prezzi, Claudia Beatriz; Kay, Suzanne Mahlburg
Año de publicación
2016
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
This paper presents the tectonostratigraphic evolution of the Maimara Basin and explores the relationship between the clastic sediments and pyroclastic deposits in the basin and the evolution of the adjacent orogeny and magmatic arc. The sedimentary facies in this part of the basin include, in ascending order, an ephemeral fluvial system, a deep braided fluvial system and a medial to distal ephemeral fluvial system. We interpret that Maimara Formation accumulated in a basin that has developed two stages of accumulation. Stage 1 extended from 7 to 6.4 Ma and included accelerated tectonic uplift in the source areas, and it corresponds to the ephemeral fluvial system deposits. Stage 2, which extended from 6.4 to 4.8 Ma, corresponds to a tectonically quiescent period and included the development of the deep braided fluvial system deposits. The contact between the Maimara and Tilcara formations is always characterized by a regional unconformity and, in the study area, also shows pronounced erosion.Rare earth element and other chemical characteristics of the tuff intervals in the Maimara Formation fall into two distinct groups suggesting the tuffs were erupted from two distinct late Miocene source regions. The first and most abundant group has characteristics that best match tuffs erupted from theGuacha, Pacana and Pastos Grandes calderas, which are located 200 and 230 km west of the study area at 22º-23º30´0 S latitude. The members the second group are chemically most similar to the Merihuaca Ignimbrite from the Cerro Galan caldera 290 km south-southwest of the studied section. The distinctive geochemical characteristics are excellent tools to reconstruct the stratigraphic evolution of the Neogene Maimara basin from 6.4 to 4.8 Ma.
Fil: Galli, Claudia Inés. Universidad Nacional de Jujuy. Instituto de Ecorregiones Andinas. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Salta. Instituto de Ecorregiones Andinas; Argentina
Fil: Coira, Beatriz Lidia Luisa. Universidad Nacional de Jujuy. Instituto de Ecorregiones Andinas. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Salta. Instituto de Ecorregiones Andinas; Argentina
Fil: Alonso, Ricardo Narciso. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Salta; Argentina
Fil: Iglesia Llanos, Maria Paula. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ciencias Geológicas; Argentina
Fil: Prezzi, Claudia Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires; Argentina
Fil: Kay, Suzanne Mahlburg. Cornell University; Estados Unidos
Materia
Maimara Formation
Paleomagnetism
Provenance
Maimara Formation
Geochemistry Tuffs
Humahuaca
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/43416
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/43416
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Tectonostratigraphic history of the Neogene Maimará basin, Northwest ArgentinaGalli, Claudia InésCoira, Beatriz Lidia LuisaAlonso, Ricardo NarcisoIglesia Llanos, Maria PaulaPrezzi, Claudia BeatrizKay, Suzanne MahlburgMaimara FormationPaleomagnetismProvenanceMaimara FormationGeochemistry TuffsHumahuacahttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1This paper presents the tectonostratigraphic evolution of the Maimara Basin and explores the relationship between the clastic sediments and pyroclastic deposits in the basin and the evolution of the adjacent orogeny and magmatic arc. The sedimentary facies in this part of the basin include, in ascending order, an ephemeral fluvial system, a deep braided fluvial system and a medial to distal ephemeral fluvial system. We interpret that Maimara Formation accumulated in a basin that has developed two stages of accumulation. Stage 1 extended from 7 to 6.4 Ma and included accelerated tectonic uplift in the source areas, and it corresponds to the ephemeral fluvial system deposits. Stage 2, which extended from 6.4 to 4.8 Ma, corresponds to a tectonically quiescent period and included the development of the deep braided fluvial system deposits. The contact between the Maimara and Tilcara formations is always characterized by a regional unconformity and, in the study area, also shows pronounced erosion.Rare earth element and other chemical characteristics of the tuff intervals in the Maimara Formation fall into two distinct groups suggesting the tuffs were erupted from two distinct late Miocene source regions. The first and most abundant group has characteristics that best match tuffs erupted from theGuacha, Pacana and Pastos Grandes calderas, which are located 200 and 230 km west of the study area at 22º-23º30´0 S latitude. The members the second group are chemically most similar to the Merihuaca Ignimbrite from the Cerro Galan caldera 290 km south-southwest of the studied section. The distinctive geochemical characteristics are excellent tools to reconstruct the stratigraphic evolution of the Neogene Maimara basin from 6.4 to 4.8 Ma.Fil: Galli, Claudia Inés. Universidad Nacional de Jujuy. Instituto de Ecorregiones Andinas. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Salta. Instituto de Ecorregiones Andinas; ArgentinaFil: Coira, Beatriz Lidia Luisa. Universidad Nacional de Jujuy. Instituto de Ecorregiones Andinas. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Salta. Instituto de Ecorregiones Andinas; ArgentinaFil: Alonso, Ricardo Narciso. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Salta; ArgentinaFil: Iglesia Llanos, Maria Paula. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ciencias Geológicas; ArgentinaFil: Prezzi, Claudia Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires; ArgentinaFil: Kay, Suzanne Mahlburg. Cornell University; Estados UnidosPergamon-Elsevier Science Ltd2016-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/43416Galli, Claudia Inés; Coira, Beatriz Lidia Luisa; Alonso, Ricardo Narciso; Iglesia Llanos, Maria Paula; Prezzi, Claudia Beatriz; et al.; Tectonostratigraphic history of the Neogene Maimará basin, Northwest Argentina; Pergamon-Elsevier Science Ltd; Journal of South American Earth Sciences; 72; 12-2016; 137-1580895-9811CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.jsames.2016.09.007info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0895981116301766info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T14:42:03Zoai:ri.conicet.gov.ar:11336/43416instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-15 14:42:03.673CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Tectonostratigraphic history of the Neogene Maimará basin, Northwest Argentina
title Tectonostratigraphic history of the Neogene Maimará basin, Northwest Argentina
spellingShingle Tectonostratigraphic history of the Neogene Maimará basin, Northwest Argentina
Galli, Claudia Inés
Maimara Formation
Paleomagnetism
Provenance
Maimara Formation
Geochemistry Tuffs
Humahuaca
title_short Tectonostratigraphic history of the Neogene Maimará basin, Northwest Argentina
title_full Tectonostratigraphic history of the Neogene Maimará basin, Northwest Argentina
title_fullStr Tectonostratigraphic history of the Neogene Maimará basin, Northwest Argentina
title_full_unstemmed Tectonostratigraphic history of the Neogene Maimará basin, Northwest Argentina
title_sort Tectonostratigraphic history of the Neogene Maimará basin, Northwest Argentina
dc.creator.none.fl_str_mv Galli, Claudia Inés
Coira, Beatriz Lidia Luisa
Alonso, Ricardo Narciso
Iglesia Llanos, Maria Paula
Prezzi, Claudia Beatriz
Kay, Suzanne Mahlburg
author Galli, Claudia Inés
author_facet Galli, Claudia Inés
Coira, Beatriz Lidia Luisa
Alonso, Ricardo Narciso
Iglesia Llanos, Maria Paula
Prezzi, Claudia Beatriz
Kay, Suzanne Mahlburg
author_role author
author2 Coira, Beatriz Lidia Luisa
Alonso, Ricardo Narciso
Iglesia Llanos, Maria Paula
Prezzi, Claudia Beatriz
Kay, Suzanne Mahlburg
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Maimara Formation
Paleomagnetism
Provenance
Maimara Formation
Geochemistry Tuffs
Humahuaca
topic Maimara Formation
Paleomagnetism
Provenance
Maimara Formation
Geochemistry Tuffs
Humahuaca
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv This paper presents the tectonostratigraphic evolution of the Maimara Basin and explores the relationship between the clastic sediments and pyroclastic deposits in the basin and the evolution of the adjacent orogeny and magmatic arc. The sedimentary facies in this part of the basin include, in ascending order, an ephemeral fluvial system, a deep braided fluvial system and a medial to distal ephemeral fluvial system. We interpret that Maimara Formation accumulated in a basin that has developed two stages of accumulation. Stage 1 extended from 7 to 6.4 Ma and included accelerated tectonic uplift in the source areas, and it corresponds to the ephemeral fluvial system deposits. Stage 2, which extended from 6.4 to 4.8 Ma, corresponds to a tectonically quiescent period and included the development of the deep braided fluvial system deposits. The contact between the Maimara and Tilcara formations is always characterized by a regional unconformity and, in the study area, also shows pronounced erosion.Rare earth element and other chemical characteristics of the tuff intervals in the Maimara Formation fall into two distinct groups suggesting the tuffs were erupted from two distinct late Miocene source regions. The first and most abundant group has characteristics that best match tuffs erupted from theGuacha, Pacana and Pastos Grandes calderas, which are located 200 and 230 km west of the study area at 22º-23º30´0 S latitude. The members the second group are chemically most similar to the Merihuaca Ignimbrite from the Cerro Galan caldera 290 km south-southwest of the studied section. The distinctive geochemical characteristics are excellent tools to reconstruct the stratigraphic evolution of the Neogene Maimara basin from 6.4 to 4.8 Ma.
Fil: Galli, Claudia Inés. Universidad Nacional de Jujuy. Instituto de Ecorregiones Andinas. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Salta. Instituto de Ecorregiones Andinas; Argentina
Fil: Coira, Beatriz Lidia Luisa. Universidad Nacional de Jujuy. Instituto de Ecorregiones Andinas. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Salta. Instituto de Ecorregiones Andinas; Argentina
Fil: Alonso, Ricardo Narciso. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Salta; Argentina
Fil: Iglesia Llanos, Maria Paula. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ciencias Geológicas; Argentina
Fil: Prezzi, Claudia Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires; Argentina
Fil: Kay, Suzanne Mahlburg. Cornell University; Estados Unidos
description This paper presents the tectonostratigraphic evolution of the Maimara Basin and explores the relationship between the clastic sediments and pyroclastic deposits in the basin and the evolution of the adjacent orogeny and magmatic arc. The sedimentary facies in this part of the basin include, in ascending order, an ephemeral fluvial system, a deep braided fluvial system and a medial to distal ephemeral fluvial system. We interpret that Maimara Formation accumulated in a basin that has developed two stages of accumulation. Stage 1 extended from 7 to 6.4 Ma and included accelerated tectonic uplift in the source areas, and it corresponds to the ephemeral fluvial system deposits. Stage 2, which extended from 6.4 to 4.8 Ma, corresponds to a tectonically quiescent period and included the development of the deep braided fluvial system deposits. The contact between the Maimara and Tilcara formations is always characterized by a regional unconformity and, in the study area, also shows pronounced erosion.Rare earth element and other chemical characteristics of the tuff intervals in the Maimara Formation fall into two distinct groups suggesting the tuffs were erupted from two distinct late Miocene source regions. The first and most abundant group has characteristics that best match tuffs erupted from theGuacha, Pacana and Pastos Grandes calderas, which are located 200 and 230 km west of the study area at 22º-23º30´0 S latitude. The members the second group are chemically most similar to the Merihuaca Ignimbrite from the Cerro Galan caldera 290 km south-southwest of the studied section. The distinctive geochemical characteristics are excellent tools to reconstruct the stratigraphic evolution of the Neogene Maimara basin from 6.4 to 4.8 Ma.
publishDate 2016
dc.date.none.fl_str_mv 2016-12
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/43416
Galli, Claudia Inés; Coira, Beatriz Lidia Luisa; Alonso, Ricardo Narciso; Iglesia Llanos, Maria Paula; Prezzi, Claudia Beatriz; et al.; Tectonostratigraphic history of the Neogene Maimará basin, Northwest Argentina; Pergamon-Elsevier Science Ltd; Journal of South American Earth Sciences; 72; 12-2016; 137-158
0895-9811
CONICET Digital
CONICET
url http://hdl.handle.net/11336/43416
identifier_str_mv Galli, Claudia Inés; Coira, Beatriz Lidia Luisa; Alonso, Ricardo Narciso; Iglesia Llanos, Maria Paula; Prezzi, Claudia Beatriz; et al.; Tectonostratigraphic history of the Neogene Maimará basin, Northwest Argentina; Pergamon-Elsevier Science Ltd; Journal of South American Earth Sciences; 72; 12-2016; 137-158
0895-9811
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jsames.2016.09.007
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0895981116301766
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Pergamon-Elsevier Science Ltd
publisher.none.fl_str_mv Pergamon-Elsevier Science Ltd
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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